Synthetic Fibres 8E

• Scien
• Secondary Education

LO: Compare and contrast between natural and synthetic fibres.

Analyse the properties of synthetic fibres and relate it to their use.

Team Synergy : Building Collaboration and Creativity

Activity 1- Hands on activity : To compare and contrast different fibres in terms of tensile strength, permeability and absorbency.

Activity 2: The Journey from Farm to Closet

Imagine you're in charge of designing a new line of clothing for a fashion company. Your task is to choose the best fibres for your clothing items. Prepare a short presentation to share your fibre selection along with the point for justification.

Nylon, a synthetic fiber, is known for its tensile strength. How does it compare to cotton in terms of tensile strength?

1. Nylon has lower tensile strength than cotton
2. Nylon has similar tensile strength to cotton
3. Nylon has higher tensile strength than cotton
4. Nylon has no tensile strength

Compared to natural fibers, synthetic fibers generally have:

1. Higher absorbency
2. Lower absorbency
3. The same level of absorbency
4. Variable absorbency

Which of the following groups contain only synthetic fibres?

1. Nylon, Terylene, Wool
2. Cotton, Polycot, Rayon
3. Acrylic, Silk, Wool
4. Polyester, Polythene, Terylene

Prepare a short presentation to share Your fibre selection along with the point for justification.

Characteristics of synthetic fibres

They have high tensile strength 

 They are biodegradable

They do not wrinkle easily 

Higher absorbency

They easily regain their orginal shape

Less expensive and readily available

Easily stretched and durable

Uses of synthetic fibres

Which of the following is used for making ropes for mountain climbing and parachutes?

1. Cotton
2. Jute
3. Silk
4. Nylon

Assertion: Acrylic fibres are used in making socks, lining for boots, gloves and shawls.

Reason: Acrylic fibres are often used as a substitute for woolen fibres.

1. Both assertion and reason are true and the reason is the correct explanation of assertion.
2. Both assertion and reason are true but the reason is not correct for the assertion.
3. The assertion is true but the reason is false.
4. The assertion is false but the reason is true.

What is the process called in which monomers are joined together to form polymers?

1. Polymer bonding
2. Cross-linking
3. Polymerisation
4. Polymer synthesis

Polyester clothes should be avoided in the kitchen. Give reason

Think Pair Share
What do you think about the material used to make your PE uniform? Why is this material used?

Which type of fiber generally has higher tensile strength?

1. Cotton
2. Polyester
3. Wool
4. Silk